For those who want to have permanent war, conscription is to be avoided. Too many people involved. Do that for too long and people start to realize that the idolatry of the sacrifice of the fallen is merely to prevent the survivors, struck with guilt, from questioning why they all had to die.
Once the slaves realize how many they are and how few the controllers are, the game is up! That is why they must constantly divide the masses and cause them to be concerned with everything else but their control by greedy thieves.
How can we tell that greedy thieves are in control? Is it very difficult? Follow the money, did you say?